package com.ler.yrmall.cart.dto;

import java.io.Serializable;
import java.math.BigDecimal;
import java.util.List;

/**
 * 整个购物车
 * 需要计算的属性，必须重写他的get方法，保证每次获取属性都会进行计算
 * @author leron
 */
public class CartDTO implements Serializable {

    /**
     * 购物项
     */
    List<CartItemDTO> items;

    /**
     * 总数量
     */
    private Integer countNum;

    /**
     * 商品种类数量
     */
    private Integer countType;

    /**
     * 商品总价
     */
    private BigDecimal totalAmount;


    public List<CartItemDTO> getItems() {
        return items;
    }

    public void setItems(List<CartItemDTO> items) {
        this.items = items;
    }

    public Integer getCountNum() {
        int count = 0;
        if (items != null && items.size() > 0) {
            for (CartItemDTO item : items) {
                count += item.getCount();
            }
        }
        return count;
    }


    public Integer getCountType() {
        int count = 0;
        if (items != null && items.size() > 0) {
            count += items.size();
        }
        return count;
    }


    public BigDecimal getTotalAmount() {
        BigDecimal amount = BigDecimal.valueOf(0);
        //1、计算购物项总价
        if (items != null && items.size() > 0) {
            for (CartItemDTO item : items) {
                BigDecimal totalPrice = item.getTotalPrice();
                amount = amount.add(totalPrice);
            }
        }
        return amount;
    }

    public void setCountNum(Integer countNum) {
        this.countNum = countNum;
    }

    public void setCountType(Integer countType) {
        this.countType = countType;
    }

    public void setTotalAmount(BigDecimal totalAmount) {
        this.totalAmount = totalAmount;
    }

}
